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Nonlinear fluctuation phenomena in the transport properties of superconductors

  • A. I. Larkin
  • Yu. N. Ovchinnikov
Solids Electronic Properties

Abstract

There exists a wide temperature region \((GiT < T - T_c < T\sqrt {Gi} )\) where the influence of fluctuations on the thermodynamic properties of superconductors can be taken into account in the linear (Gaussian) approximation, while their influence on the kinetic properties is strongly nonlinear. The Maki-Thompson contribution to the conductivity saturates in this region. However, the Aslamazov-Larkin contribution becomes even more singular. This enhancement is related to the fact that nonlinear effects increase the lifetime of fluctuating pairs. The pair breaking and energy relaxation processes can decrease the nonlinear effects.

Keywords

Spectroscopy State Physics Field Theory Elementary Particle Quantum Field Theory 
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Copyright information

© MAIK "Nauka/Interperiodica" 2001

Authors and Affiliations

  • A. I. Larkin
    • 1
    • 2
  • Yu. N. Ovchinnikov
    • 1
  1. 1.Landau Institute for Theoretical PhysicsRussian Academy of SciencesMoscowRussia
  2. 2.Theoretical Physics InstituteUniversity of MinnesotaMinneapolisUSA

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